When Kara Zor-El was sent to earth to look after her cousin Kal-El, now known as Superman, she is shocked to see her twin sister Silver Zor-El waiting for her in the Danvers house.
Silver Zor-El was sent to earth maybe a year before Kara was released in the pod, but because they were identical twins, they were linked to each other.
Because Krypton ran at a different time, Silver was 3 years older then Kara when she arrived on Planet Earth and was brought to the Danvers door.
Now, Silver is working with the DEO, and she flies as the Silver Warrior.
She has been saving people since she first turned 17, the day she saved her school trip from a car accident, by getting in between the car and the bus, and coming away with only a handful of 'bruises', and 'cuts'.
Ever since then, she's been working with her cousin to save the earth. Whatever city it is, whatever country it is, whatever time zone, she will be there if Clark isn't or is.
But what happens when Kara becomes just as stubborn as she is, and begins going out with the codename "Supergirl".
{Silver Series}
1) Silver Piercer
2)
{Main Characters}
Kara Zor-El
Silver Zor-El
Alex Danvers
Clark Kent/Kal-El
Astra Zor-El
Non
James (Jimmy) Olsen
Winn Schott
Cat Grant